Here is mine

Model: Centurion Cavaletto (I know but it was free)
SN: N5E0563
Tubing: 1.2mm gauge lightweight
Fork: Tange High Tensile
Derailers: Unnamed Shimano
Shifters: Unnamed Shimano
Hubs: Suzue
Rims: Steel
Cranks: Sugino Stamped steel
Brakes: Dia-Compe
Color: Silver with blue accents
Guessing it's a 83 based on part numbers